26481307650 has 72 divisors (see below), whose sum is σ = 76395891600. Its totient is φ = 6052868640.

The previous prime is 26481307639. The next prime is 26481307651. The reversal of 26481307650 is 5670318462.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26481307651) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1794100 + ... + 1808799.

It is an arithmetic number, because the mean of its divisors is an integer number (1061054050).

Almost surely, 2^26481307650 is an apocalyptic number.

26481307650 is an abundant number, since it is smaller than the sum of its proper divisors (49914583950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26481307650 is a wasteful number, since it uses less digits than its factorization.

26481307650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602928 (or 3602916 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 26481307650 in words is "twenty-six billion, four hundred eighty-one million, three hundred seven thousand, six hundred fifty".